/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package v2

import (
	"fmt"
	"net"
)

// Create CidrRange
func Create(address string, length uint32) *CidrRange {
	// TODO do more check ?
	_, ipNet, err := net.ParseCIDR(fmt.Sprintf("%s/%d", address, length))
	if err == nil {
		ipRange := &CidrRange{
			Address: address,
			Length:  length,
			IpNet:   ipNet,
		}
		return ipRange
	}
	return nil
}

// IsInRange
func (c *CidrRange) IsInRange(ip net.IP) bool {
	if c.IpNet == nil {
		_, ipNet, err := net.ParseCIDR(fmt.Sprintf("%s/%d", c.Address, c.Length))
		if err == nil {
			c.IpNet = ipNet
		} else {
			return false
		}
	}
	return c.IpNet.Contains(ip)
}
